User's Manual

50
External Radio Unit Installation Guide
Tools and materials
Make sure you have the following items on hand before you begin.
ATTENTION:
The #10 AWG copper grounding wire must be a single,
whole piece of wire. Never splice two wires for the grounding wire. If you cut
the grounding wire too short, break it, or destroy its integrity, it becomes
unusable and you must replace it with a single length of wire.
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To install the coaxial cable and grounding wire between the ERU
and the ground block
1
Attach the ground block to the side of the building close to the point you have
chosen as the entry point for the RG-6/U coaxial cable.
You may have to use anchors, togglers, or wood screws, depending on the
surface on which you are mounting the ground block.
2
Route the RG-6/U coaxial cable and messengered grounding wire that you
connected to the ERU to the ground block.
3
Make a drip loop of 8–13 cm (3–5 inches) using cable clips at the ground block
as shown below.
This will prevent water from running into the connection at the ground block and
keep water from running into the wall.
4
Attach the two grounding wires (the #17 AWG wire that is attached to the
coaxial cable that runs from the ERU and the #10 AWG wire that you will run to
the building ground in the next step) to the ground block by running them
through the wire hole in the ground block and tightening the screw.
Materials Tools
Ground block and necessary hardware Screwdriver
#10 AWG copper grounding wire Hammer
Hybrid RG-6/U coaxial cable with
messengered #17 AWG grounding wire
Oxide-inhibiting compound
ATTENTION:
The United States National Electrical Code
(NEC) and the Canadian Electrical Code (CEC) specify that coaxial
cable that is exposed to lightning must be connected to the grounding
system of the building as close to the point of cable entry as possible.